Net Promoter Score (NPS) is a popular metric that companies use to analyze their customer experience efforts, but how does it actually relate to loyalty? We asked thousands of consumers to give an NPS to 293 companies across 20 industries, and then we examined the connection between NPS and four key areas of loyalty. We found that compared to detractors, promoters are more than five times as likely to repurchase from a company, more than five times as likely to forgive a company if it makes a mistake, more than seven times as likely to try a new offering shortly after its introduction, and that they recommend the company to about four times as many people. This analysis examines the loyalty behaviors of promoters, passives, and detractors across 20 industries: airlines, appliance makers, auto dealers, banks, rental car agencies, computer and tablet makers, credit card issuers, fast food chains, health plans, hotel chains, insurance carriers, Internet service providers, investment firms, parcel delivery services, retailers, software firms, supermarkets, TV service providers, utilities, and wireless carriers. The percentage of promoters who are likely to repurchase ranges from 96% for retailers, fast food chains, and supermarkets down to 77% for airlines, while the percentage of those who are likely to forgive ranges from 72% for computers & tablets, utilities, and supermarkets down to 51% for airlines. Meanwhile, the percentage of those who are likely to try new offerings ranges from 70% for major appliances and software firms down to 52% for banks. Ultimately, if a company wants to benefit from using NPS as a key metric, it must focus on improving customer experience, not obsessing over the metric itself.